iOS / CSS help needed

Hi everyone.

I'm using this plugin on http://tambourhinoceros.net and for some reason I do not understand the styling mess up when viewing the site from an iOS device. The OK button is moved to the far right of the screen and the rest of the site shrinks a bit. I've tried removing the block and the site has it's full 960px width back.

Any help would be greatly appreciated

Here's my mailchimp styles:

#edit-mailchimp-lists-mailchimp-newsletter-title, #block-mailchimp-lists-newsletter label	{
	display: none;
}

#block-mailchimp-lists-newsletter select	{
	background: black;
	color: white;
}

#block-mailchimp-lists-newsletter input.form-text	{
	width: 110px;
}

#block-mailchimp-lists-newsletter .form-type-textfield	{
	width: 127px;
	float: left;
}

#block-mailchimp-lists-newsletter .form-type-select	{
	width: 100px;
	float: left;
}

#block-mailchimp-lists-newsletter .content	{
	padding: 0 10px;
	margin: -20px 0 0 0;
	height: 55px;
}

#block-mailchimp-lists-newsletter .content > a	{
	display: block;
	width: 257px;
	text-align: right;
	font-family: Times,"Times New Roman",serif;
	font-size: 13px;
	color: #898989;
	text-decoration: none;
	font-style: italic;
	border-top: solid 3px #8D8D8D;
	margin: -47px 0 0 0 ;
}

#block-mailchimp-lists-newsletter #edit-submit	{
	position: relative;
	top: -46px;
	right: -230px;
}

#mailchimp-lists-user-subscribe-form-newsletter > div	{
	position: relative;
}